Folding knife



FIG. 1 is a left perspective view of a folding knife showing my newdesign;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side view thereof; and

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a right perspective view thereof.

The broken lines depict portions of the folding knife in which thedesign is embodied that are not considered part of the claimed design.

CLAIM The ornamental design for a folding knife, as shown and described.